We were finally able to get Mandevillas. The problem with being a small greenhouse operation, is that we normally have to buy minimum quantities of started plants, and these minimum quantities are not mixed colors--so 50 or 100 of one color of some plants is way more than I can sell. And some plants like Mandevillas are expensive for us to buy, so you can see why I can't allow myself to have a lot left over. But this year I came across a sampler with 4 varieties, and I didn't have to buy 50. So we'll see how they do.
In our climate we have to bring them in for the winter if we want to keep them for next year.